Metal cask.



J.- A. STEIN'METZ.

METAL GASK.

APPLICATION FILED MAR. 14. 1912.

Patented Apr. 29, 1913.

bine low cost with ED srn'rns Parana Winn.

JOSEPH A. STEINMETZ, OF PHILADELPHIA, PENNS YLVANIA.

METAL .GASK.

incense.

To all whom it may concern:

Be it known that I, JOSEPH A. Srnmmn'rz, citizen of the United States, residing it-Philadelphia, in the. county of Philadelphia and State of Pennsylvania, have invented certain. new and useful Improvc-' ments in Metal (lasks, of which the follow ing is a specification, reference being had therein to the accompanying drawing.

My invention relates to metal barrels and the like, and its general object is to comgreat strength and other advantages.

One feature of the invention pertains to a In the accompanying drawings, Figure 1' shows in diametrical section a barrel hav ing the body and heads made up of two oppositely turned, seamless cup-like members, preferably joined by welding and having the joint'internally reinforced and the body walls centrally supported by 'an internal transverse diaphragm. Fig. 2is a similar sectional View showing the body and one head formed in one piece while. the other head is primarily distinct. Fig. 3 similarly shows a one-piece body with both heads inserted. v

In Fig. 1 A, A represents two oppositely turned,.cup-shaped halves of a;

. rel, each formed from asingle sheet of metal outwardly beveled at its margin and abutting the companion margin, the V- sha ed channel thus formed being filled the two parts integrally united by metal. This connecting metal is usually suppliedby placing a bar in the groove and progressively fusing it electrically or otherwise. Before the two halves are thus joined,'h0wever, I (place in the open end of one a diaphragm of circular form provided with a mar al flange G which projects about halfl p the diaphragm has been forced into the cup to proper position. Over this projecting Specification of Letters Patent.

its own width when Patented Apr. 29, W13.

- Application filed March 14, 1912.. Serial No. 683,668.

portion, the other cup' is forced, to meet the companion cup. These parts may be brazed or welded together before the channel between the cups is filled in the manner already described. The outer end of each cup has itswallsbent back u on themselves so that the head lies in a p ane at some distance within the extreme limits of the body walls and the central portion of the head is preferably pressed outward to form a central boss D-surrounded by a plane annular portion 13'. Into the projecting doubled portion of the body wall 1s pressed a heavy metal ring E in cross section like an angle bar-thickened near'the angle so that it may offer great resistance to any change of the angle. One broad flange of this ring rests against and covers the. lane annular portion of the head while t e other flange fits within the projecting doubled portion of the body walls, which are bent inwardlyagainst this fl ge, so that the margin of the latter is hel and protected by a rounded rib made up of four thicknesses of ,the wall metal. One of\the heads is pressed out centrally to form a recess for receiving a centrally perforated block E which is internally flush with the head andrwhich serves'for holding a bung or closure insertedfrom without through a corresponding perforation in the bottom of the recess. When the barrel is thus far completed, it is provlded with an interlor coating on lining, F, preferably of metal. Ordinarily, the diaphragm is provided with apertures so that the spaceson each side are in communication.

It may beobservd that in making the cask, the flanged diaphragm insures bringing "the cup margins into exact circular form with the surfaces to be brazed or welded accurately adjusted on all sides so that the brazed or welded joint is perfectly made at all pointsand the barrel is never flattened in making. It is also obvious that the flange doubles the metal at the joint,

making this part" the strongest instead of s the weakest and that the diaphragm itself makes it practically impossible to crush or even spring the barrel near the middle.

It is of perhaps eater lmportance that the barrel can harfl ybe injured by force applied to the chime in any direction, even r if the barrel beheld in oblique position and then be dropped from a considerable height.

This strength is due partly to the stiflness of the four-ply wall metal, partly to the stiffness of the reinforcing ring, and partly to the fact that the broad flange of the ring transmits force to the head and distributes it widely. It is also important that even in case extraordinary force should be applied and the parts should be temporarily or permanently distorted, there is no sharp angle at which actual rupture is likely to occur and cause leakage,

In Fig. 2 both heads are shown as plane, one being integral and formed and reinforced as-before, while the other is flanged, forced into place, reinforced'by the same kind of rin E, and preferably brazed or welded in p ace, the head flange and ring light and inexpensive casks, they are especially adapted, when of proper thickness and materlal, for containing 1i uids under high tension, as well as those 0 a danger- ,ous character aside from their tension, for

example certain chemicals, oils and liquids.

What I claim is: 1. The combination with a. metal cask body made up of two oppositely turned cupof a transverse metal diaphragm havm a peripheral flange fitting against the interior of both said members and connected to both by metal continuous with the metal of both.

2. The combination with a metal cask body made u of two oppositely turned meetin cup-1' emembers of the same marginal 'ameter, of a transverse metal diaphragm covering internally the joint between the two members, said members being connected at their meeting margins with each other and with the diaphragm by metal continuous with the metal of all three members.

3. The .combination with metal cask walls doubled back upon themselves at the cask ends and integrally connected with acask head of a broad ring resting upon and covering the peripheral portion of the head and having an approximately cylindrical flan efitting within the doubled portion of said bent back walls, said doubled rti'on bein like members welded together margmally,

upon itself to there y embrace t e outer or marginal portion of said flange.

In testimony whereof I aflix my signature in presence of two witnesses. v

. JOSEPH A. STEINMETZ.. Witnesses:

Anson B. Evans, EDITH A. S'mrnmrz. 

